Check out the project HERE.

Balloon mapping is sending a camera up on a balloon, snapping photos, and stitching them into a map. Over the past 18 months, we’ve build a global community of mappers who use balloons and kites to take aerial photos, and our browser application MapKnitter to stitch them together. We’ve put our experience into a comprehensive balloon mapping kit that only costs $85 (shipping included) and comes with illustrated instructions.
Follow us at grassrootsmapping.org, and check out our map archive at the Public Laboratory for Open Technology and Science .
January 31, 2012 at 2:25 am
This is utterly awesome, thanks for the link! I just backed them and hope I get my balloon kit!